Measurement and modeling of CO2 mass transfer in brine at reservoir conditions

Shi, Zhubing; Wen, Baole; Hesse, M. A.; Tsotsis, Theo; Jessen, Kristian

doi:10.1016/j.advwatres.2017.11.002

Cited by 41 publications

(45 citation statements)

References 49 publications

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“…Here we show that the pressure drop in the gas can limit CO 2 dissolution long before saturation of the brine becomes a limiting factor. These negative feedbacks in closed systems are common in experiments on CO 2 dissolution (Farajzadeh et al 2009;Moghaddam et al 2012;Mojtaba et al 2014;Shi et al 2017) and in some natural CO 2 reservoirs that serve as analogs for geological CO 2 storage (Akhbari & Hesse 2017). Engineered geological storage sites are typically selected such that CO 2 is supercritical to maximise the storage capacity (Orr 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, to simplify the analysis and emphasise the essential new feedback we assume that phase behaviour in the closed system is ideal. However, we have used the same modelling approach to describe high-pressure dissolution experiments with supercritical CO 2 in Shi et al (2017), so that the analysis presented here is not limited to the ideal case. Below we give units to avoid confusion that can arise from multiple definitions used for the Henry's law constant.…”

Section: Introductionmentioning

confidence: 99%

“…n g + n w , remain constant. We note that our analysis, ignores the slight change in water volume upon CO 2 dissolution as well as the evaporation of water into the gas, both of which are negligible (Shi et al 2017). Consider a closed system that is initially out of equilibrium and contains a gas with a pressure P * g,0 in contact with a finite volume of water containing no dissolved gas.…”

Section: Introductionmentioning

confidence: 99%

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Convective carbon dioxide dissolution in a closed porous medium at low pressure

et al. 2018

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Motivated by geological carbon dioxide (CO 2 ) storage, many recent studies have investigated the fluid dynamics of solutal convection in porous media. Here we study the convective dissolution of CO 2 in a closed system, where the pressure in the gas declines as convection proceeds. This introduces a negative feedback that reduces the convective dissolution rate even before the brine becomes saturated. We analyse the case of an ideal gas with a solubility given by Henry's law, in the limits of very low and very high Rayleigh numbers. The equilibrium state in this system is determined by the dimensionless dissolution capacity, Π, which gives the fraction of the gas that can be dissolved into the underlying brine. Analytic approximations of the pure diffusion problem with Π > 0, show that the diffusive base state is no longer self-similar and that diffusive mass transfer declines rapidly with time. Direct numerical simulations at high Rayleigh numbers show that no constant flux regime exists for Π > 0; nevertheless, the quantity F/C 2 s remains constant, where F is the dissolution flux and C s is the dissolved concentration at the top of the domain. Simple mathematical models are developed to predict the evolution of C s and F for high-Rayleigh-number convection in a closed system. The negative feedback that limits convection in closed systems may explain the persistence of natural CO 2 accumulations over millennial timescales.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Convective carbon dioxide dissolution in a closed porous medium at low pressure

et al. 2018

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“…Buoyancy-driven convection in a fluid-saturated porous layer has been extensively studied due to its numerous applications in oil recovery [1], groundwater flow and geothermal energy extraction [2][3][4][5][6][7], transport in biological tissues [8], and carbon dioxide sequestration [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. Moreover, porous media convection is also used as a classical example to study instabilities, bifurcations, pattern formation, and spatiotemporally chaotic dynamics [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

A short review on porous media convection

shao¹

2018

Preprint

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We briefly review the investigations of pattern formation and transport properties of RayleighDarcy convection (or the Elder Problem), including laboratory experiments, theoretical analysis and numerical simulations. It is shown that the flow exhibits power-law-scaling characteristics at large Rayleigh-Darcy number Ra, a dimensionless parameter representing the ratio of the driving buoyancy forces to the diffusive forces. Namely, the mean spacing between neighboring interior plumes shrinks as Ra −α with the scaling exponent α ≤ 1/2 and the convective flux increases linearly with Ra. However, more laboratory experiments are needed to validate these scalings. Additionally, many conditions, e.g. the inclination of the layer and hydrodynamic dispersion, etc., may lead to a large uncertainty in the flow pattern and transport efficiency.

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“…There have been extensive studies in porous media convection due to its numerous applications in design of compact heat exchangers [1], groundwater flow and geothermal energy extraction [2][3][4], transport in biological tissues [5], oil recovery [6,7], and geological carbon dioxide storage [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22], etc. In the Rayleigh-Darcy scenario, the system exhibits rich nonlinear dynamics as the primary control parameter, the Rayleigh number Ra, increases, and thereby is usually used as a classical example to study instabilities, bifurcations, pattern formation, and spatiotemporally chaotic dynamics [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Marginally stable thermal convection in porous media

shao¹

2018

Preprint

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Motivated by Malkus' marginally stable boundary layer theory, we design an optimization problem to predict the heat transport through a two-dimensional, horizontal porous layer heated from the below and cooled from above. We solve the optimization problem numerically using a implemented package in Matlab. Our results show that the linear stability constraint well captures the unit-scaling property of flux at large values of Rayleigh number. Moreover, the predicted mean temperature profile shares many features exhibited by the long-time mean temperature profile from DNS.

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Measurement and modeling of CO2 mass transfer in brine at reservoir conditions

Cited by 41 publications

References 49 publications

Convective carbon dioxide dissolution in a closed porous medium at low pressure

Convective carbon dioxide dissolution in a closed porous medium at low pressure

A short review on porous media convection

Marginally stable thermal convection in porous media

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